#include "HsVersions.h"
-import {-# SOURCE #-} HsExpr ( pprExpr, HsExpr )
-import {-# SOURCE #-} HsMatches ( pprMatches, Match, pprGRHSs, GRHSs )
+import {-# SOURCE #-} HsExpr ( HsExpr, pprExpr,
+ Match, pprFunBind,
+ GRHSs, pprPatBind )
-- friends:
+import HsImpExp ( ppr_var )
import HsTypes ( HsType )
import CoreSyn ( CoreExpr )
-import PprCore () -- Instances for Outputable
+import PprCore ( {- instance Outputable (Expr a) -} )
--others:
-import Id ( Id )
-import BasicTypes ( RecFlag(..), Fixity )
+import Name ( Name )
+import PrelNames ( isUnboundName )
+import NameSet ( NameSet, elemNameSet, nameSetToList )
+import BasicTypes ( RecFlag(..), Fixity, Activation(..) )
import Outputable
-import Bag
import SrcLoc ( SrcLoc )
import Var ( TyVar )
+import Class ( DefMeth (..) )
\end{code}
%************************************************************************
nullBinds EmptyBinds = True
nullBinds (ThenBinds b1 b2) = nullBinds b1 && nullBinds b2
nullBinds (MonoBind b _ _) = nullMonoBinds b
+
+mkMonoBind :: MonoBinds id pat -> [Sig id] -> RecFlag -> HsBinds id pat
+mkMonoBind EmptyMonoBinds _ _ = EmptyBinds
+mkMonoBind mbinds sigs is_rec = MonoBind mbinds sigs is_rec
\end{code}
\begin{code}
ppr_binds EmptyBinds = empty
ppr_binds (ThenBinds binds1 binds2)
- = ($$) (ppr_binds binds1) (ppr_binds binds2)
+ = ppr_binds binds1 $$ ppr_binds binds2
ppr_binds (MonoBind bind sigs is_rec)
- = vcat [ifNotPprForUser (ptext rec_str),
+ = vcat [ppr_isrec,
vcat (map ppr sigs),
ppr bind
]
where
- rec_str = case is_rec of
- Recursive -> SLIT("{- rec -}")
- NonRecursive -> SLIT("{- nonrec -}")
+ ppr_isrec = getPprStyle $ \ sty ->
+ if userStyle sty then empty else
+ case is_rec of
+ Recursive -> ptext SLIT("{- rec -}")
+ NonRecursive -> ptext SLIT("{- nonrec -}")
\end{code}
%************************************************************************
| AndMonoBinds (MonoBinds id pat)
(MonoBinds id pat)
- | PatMonoBind pat
- (GRHSs id pat)
+ | FunMonoBind id -- Used for both functions f x = e
+ -- and variables f = \x -> e
+ -- Reason: the Match stuff lets us have an optional
+ -- result type sig f :: a->a = ...mentions a...
+ --
+ -- This also means that instance decls can only have
+ -- FunMonoBinds, so if you change this, you'll need to
+ -- change e.g. rnMethodBinds
+ Bool -- True => infix declaration
+ [Match id pat]
SrcLoc
- | FunMonoBind id
- Bool -- True => infix declaration
- [Match id pat]
+ | PatMonoBind pat -- The pattern is never a simple variable;
+ -- That case is done by FunMonoBind
+ (GRHSs id pat)
SrcLoc
| VarMonoBind id -- TRANSLATION
| CoreMonoBind id -- TRANSLATION
CoreExpr -- No zonking; this is a final CoreExpr with Ids and Types!
- | AbsBinds -- Binds abstraction; TRANSLATION
- [TyVar] -- Type variables
- [id] -- Dicts
- [([TyVar], id, id)] -- (type variables, polymorphic, momonmorphic) triples
+ | AbsBinds -- Binds abstraction; TRANSLATION
+ [TyVar] -- Type variables
+ [id] -- Dicts
+ [([TyVar], id, id)] -- (type variables, polymorphic, momonmorphic) triples
+ NameSet -- Set of *polymorphic* variables that have an INLINE pragma
(MonoBinds id pat) -- The "business end"
-- Creates bindings for *new* (polymorphic, overloaded) locals
in (fm,gm)
\begin{code}
-nullMonoBinds :: MonoBinds id pat -> Bool
+-- We keep the invariant that a MonoBinds is only empty
+-- if it is exactly EmptyMonoBinds
+nullMonoBinds :: MonoBinds id pat -> Bool
nullMonoBinds EmptyMonoBinds = True
-nullMonoBinds (AndMonoBinds bs1 bs2) = nullMonoBinds bs1 && nullMonoBinds bs2
nullMonoBinds other_monobind = False
andMonoBinds :: MonoBinds id pat -> MonoBinds id pat -> MonoBinds id pat
andMonoBinds mb1 mb2 = AndMonoBinds mb1 mb2
andMonoBindList :: [MonoBinds id pat] -> MonoBinds id pat
-andMonoBindList binds = foldr AndMonoBinds EmptyMonoBinds binds
+andMonoBindList binds
+ = loop1 binds
+ where
+ loop1 [] = EmptyMonoBinds
+ loop1 (EmptyMonoBinds : binds) = loop1 binds
+ loop1 (b:bs) = loop2 b bs
+
+ -- acc is non-empty
+ loop2 acc [] = acc
+ loop2 acc (EmptyMonoBinds : bs) = loop2 acc bs
+ loop2 acc (b:bs) = loop2 (acc `AndMonoBinds` b) bs
\end{code}
+
\begin{code}
instance (Outputable id, Outputable pat) =>
Outputable (MonoBinds id pat) where
ppr_monobind (AndMonoBinds binds1 binds2)
= ppr_monobind binds1 $$ ppr_monobind binds2
-ppr_monobind (PatMonoBind pat grhss locn)
- = sep [ppr pat, nest 4 (pprGRHSs False grhss)]
-
-ppr_monobind (FunMonoBind fun inf matches locn)
- = pprMatches (False, ppr fun) matches
+ppr_monobind (PatMonoBind pat grhss locn) = pprPatBind pat grhss
+ppr_monobind (FunMonoBind fun inf matches locn) = pprFunBind fun matches
-- ToDo: print infix if appropriate
ppr_monobind (VarMonoBind name expr)
ppr_monobind (CoreMonoBind name expr)
= sep [ppr name <+> equals, nest 4 (ppr expr)]
-ppr_monobind (AbsBinds tyvars dictvars exports val_binds)
+ppr_monobind (AbsBinds tyvars dictvars exports inlines val_binds)
= sep [ptext SLIT("AbsBinds"),
brackets (interpp'SP tyvars),
brackets (interpp'SP dictvars),
- brackets (interpp'SP exports)]
+ brackets (sep (punctuate comma (map ppr exports))),
+ brackets (interpp'SP (nameSetToList inlines))]
$$
nest 4 (ppr val_binds)
\end{code}
SrcLoc
| ClassOpSig name -- Selector name
- (Maybe name) -- Default-method name (if any)
+ (DefMeth name) -- Default-method info
+ -- See "THE NAMING STORY" in HsDecls
(HsType name)
SrcLoc
| SpecSig name -- specialise a function or datatype ...
(HsType name) -- ... to these types
- (Maybe name) -- ... maybe using this as the code for it
- SrcLoc
-
- | InlineSig name -- INLINE f
SrcLoc
- | NoInlineSig name -- NOINLINE f
+ | InlineSig Bool -- True <=> INLINE f, False <=> NOINLINE f
+ name -- Function name
+ Activation -- When inlining is *active*
SrcLoc
| SpecInstSig (HsType name) -- (Class tys); should be a specialisation of the
-- current instance decl
SrcLoc
- | FixSig (FixitySig name) -- Fixity declaration
+ | FixSig (FixitySig name) -- Fixity declaration
-data FixitySig name = FixitySig name Fixity SrcLoc
+data FixitySig name = FixitySig name Fixity SrcLoc
+
+instance Eq name => Eq (FixitySig name) where
+ (FixitySig n1 f1 _) == (FixitySig n2 f2 _) = n1==n2 && f1==f2
\end{code}
\begin{code}
-sigsForMe :: (name -> Bool) -> [Sig name] -> [Sig name]
-sigsForMe f sigs
- = filter sig_for_me sigs
- where
- sig_for_me (Sig n _ _) = f n
- sig_for_me (ClassOpSig n _ _ _) = f n
- sig_for_me (SpecSig n _ _ _) = f n
- sig_for_me (InlineSig n _) = f n
- sig_for_me (NoInlineSig n _) = f n
- sig_for_me (SpecInstSig _ _) = False
- sig_for_me (FixSig (FixitySig n _ _)) = f n
-
-nonFixitySigs :: [Sig name] -> [Sig name]
-nonFixitySigs sigs = filter not_fix sigs
- where
- not_fix (FixSig _) = False
- not_fix other = True
+okBindSig :: NameSet -> Sig Name -> Bool
+okBindSig ns (ClassOpSig _ _ _ _) = False
+okBindSig ns sig = sigForThisGroup ns sig
+
+okClsDclSig :: NameSet -> Sig Name -> Bool
+okClsDclSig ns (Sig _ _ _) = False
+okClsDclSig ns sig = sigForThisGroup ns sig
+
+okInstDclSig :: NameSet -> Sig Name -> Bool
+okInstDclSig ns (Sig _ _ _) = False
+okInstDclSig ns (FixSig _) = False
+okInstDclSig ns (SpecInstSig _ _) = True
+okInstDclSig ns sig = sigForThisGroup ns sig
+
+sigForThisGroup ns sig
+ = case sigName sig of
+ Nothing -> False
+ Just n | isUnboundName n -> True -- Don't complain about an unbound name again
+ | otherwise -> n `elemNameSet` ns
+
+sigName :: Sig name -> Maybe name
+sigName (Sig n _ _) = Just n
+sigName (ClassOpSig n _ _ _) = Just n
+sigName (SpecSig n _ _) = Just n
+sigName (InlineSig _ n _ _) = Just n
+sigName (FixSig (FixitySig n _ _)) = Just n
+sigName other = Nothing
+
+isFixitySig :: Sig name -> Bool
+isFixitySig (FixSig _) = True
+isFixitySig _ = False
+
+isClassOpSig :: Sig name -> Bool
+isClassOpSig (ClassOpSig _ _ _ _) = True
+isClassOpSig _ = False
+
+isPragSig :: Sig name -> Bool
+ -- Identifies pragmas
+isPragSig (SpecSig _ _ _) = True
+isPragSig (InlineSig _ _ _ _) = True
+isPragSig (SpecInstSig _ _) = True
+isPragSig other = False
+\end{code}
+
+\begin{code}
+hsSigDoc (Sig _ _ loc) = (SLIT("type signature"),loc)
+hsSigDoc (ClassOpSig _ _ _ loc) = (SLIT("class-method type signature"), loc)
+hsSigDoc (SpecSig _ _ loc) = (SLIT("SPECIALISE pragma"),loc)
+hsSigDoc (InlineSig True _ _ loc) = (SLIT("INLINE pragma"),loc)
+hsSigDoc (InlineSig False _ _ loc) = (SLIT("NOINLINE pragma"),loc)
+hsSigDoc (SpecInstSig _ loc) = (SLIT("SPECIALISE instance pragma"),loc)
+hsSigDoc (FixSig (FixitySig _ _ loc)) = (SLIT("fixity declaration"), loc)
\end{code}
\begin{code}
instance (Outputable name) => Outputable (Sig name) where
ppr sig = ppr_sig sig
-instance Outputable name => Outputable (FixitySig name) where
- ppr (FixitySig name fixity loc) = sep [ppr fixity, ppr name]
-
-
+ppr_sig :: Outputable name => Sig name -> SDoc
ppr_sig (Sig var ty _)
= sep [ppr var <+> dcolon, nest 4 (ppr ty)]
-ppr_sig (ClassOpSig var _ ty _)
- = sep [ppr var <+> dcolon, nest 4 (ppr ty)]
-
-ppr_sig (SpecSig var ty using _)
+ppr_sig (ClassOpSig var dm ty _)
+ = sep [ ppr_var var <+> dcolon,
+ nest 4 (ppr ty),
+ nest 4 (pp_dm_comment) ]
+ where
+ pp_dm = case dm of
+ DefMeth _ -> equals -- Default method indicator
+ GenDefMeth -> semi -- Generic method indicator
+ NoDefMeth -> empty -- No Method at all
+ pp_dm_comment = case dm of
+ DefMeth _ -> text "{- has default method -}"
+ GenDefMeth -> text "{- has generic method -}"
+ NoDefMeth -> empty -- No Method at all
+
+ppr_sig (SpecSig var ty _)
= sep [ hsep [text "{-# SPECIALIZE", ppr var, dcolon],
- nest 4 (hsep [ppr ty, pp_using using, text "#-}"])
+ nest 4 (ppr ty <+> text "#-}")
]
- where
- pp_using Nothing = empty
- pp_using (Just me) = hsep [char '=', ppr me]
-ppr_sig (InlineSig var _)
- = hsep [text "{-# INLINE", ppr var, text "#-}"]
+ppr_sig (InlineSig True var phase _)
+ = hsep [text "{-# INLINE", ppr phase, ppr var, text "#-}"]
-ppr_sig (NoInlineSig var _)
- = hsep [text "{-# NOINLINE", ppr var, text "#-}"]
+ppr_sig (InlineSig False var phase _)
+ = hsep [text "{-# NOINLINE", ppr phase, ppr var, text "#-}"]
ppr_sig (SpecInstSig ty _)
= hsep [text "{-# SPECIALIZE instance", ppr ty, text "#-}"]
ppr_sig (FixSig fix_sig) = ppr fix_sig
+
+
+instance Outputable name => Outputable (FixitySig name) where
+ ppr (FixitySig name fixity loc) = sep [ppr fixity, ppr name]
\end{code}
+Checking for distinct signatures; oh, so boring
+
+
+\begin{code}
+eqHsSig :: Sig Name -> Sig Name -> Bool
+eqHsSig (Sig n1 _ _) (Sig n2 _ _) = n1 == n2
+eqHsSig (InlineSig b1 n1 _ _)(InlineSig b2 n2 _ _) = b1 == b2 && n1 == n2
+
+eqHsSig (SpecInstSig ty1 _) (SpecInstSig ty2 _) = ty1 == ty2
+eqHsSig (SpecSig n1 ty1 _) (SpecSig n2 ty2 _) =
+ -- may have many specialisations for one value;
+ -- but not ones that are exactly the same...
+ (n1 == n2) && (ty1 == ty2)
+
+eqHsSig _other1 _other2 = False
+\end{code}
projects / ghc-hetmet.git / blobdiff